user
Task: Decide if the following two sentences are equivalent, and if so explain how the second sentence derives meaning from the first.
Input: Sentence 1: It was a dark and stormy night.
Sentence 2: The sky was ominous.
Output:
assistant
Yes, the two sentences are equivalent. The second sentence derives its meaning from the first; the reference to a "dark and stormy night" implies a certain level of dread and foreshadowing, suggesting that the sky is filled with an ominous atmosphere.